How to configure unity container to provide string constructor value?

Question

This is my dad class

 public class Dad
    {
        public string Name
        {
            get;set;
        }
        public Dad         


        

Answer 1

You should provide a parameterless constructor:

public class Dad
{
    public string Name { get; set; }

    public Dad()
    {
    }

    public Dad(string name)
    {
        Name = name;
    }
}

If you can't provide a parameterless constructor, you need to configure the container to provide it, either by directly registering it with the container:

UnityContainer DadContainer = new UnityContainer();
DadContainer.RegisterType<Dad>(
    new InjectionConstructor("chris"));

or through the app/web.config file:

<configSections>
  <section name="unity" type="Microsoft.Practices.Unity.Configuration.UnityConfigurationSection, Microsoft.Practices.Unity.Configuration"/>
</configSections>

<unity>
  <containers>
    <container>
      <register type="System.String, MyProject">
        <constructor>
          <param name="name" value="chris" />
        </constructor>
      </register >
    </container>
  </containers>
</unity>